Ecological Risk Assessment


Book Description

Recently, environmental scientists have been required to perform a new type of assessment-ecological risk assessment. This is the first book that explains how to perform ecological risk assessments and gives assessors access to the full range of useful data, models, and conceptual approaches they need to perform an accurate assessment. It explains how ecological risk assessment relates to more familiar types of assessments. It also shows how to organize and conduct an ecological risk assessment, including defining the source, selecting endpoints, describing the relevant features of the receiving environment, estimating exposure, estimating effects, characterizing the risks, and interacting with the risk manager. Specific technical topics include finding and selecting toxicity data; statistical and mathematical models of effects on organisms, populations, and ecosystems; estimation of chemical fate parameters; modeling of chemical transport and fate; estimation of chemical uptake by organisms; and estimation, propagation, and presentation of uncertainty. Ecological Risk Assessment also covers conventional risk assessments, risk assessments for existing contamination, large scale problems, exotic organisms, and risk assessments based on environmental monitoring. Environmental assessors at regulatory agencies, consulting firms, industry, and government labs need this book for its approaches and methods for ecological risk assessment. Professors in ecology and other environmental sciences will find the book's practical preparation useful for classroom instruction. Environmental toxicologists and chemists will appreciate the discussion of the utility for risk assessment of particular toxicity tests and chemical determinations.




Ecological Risk Assessment for Contaminated Sites


Book Description

Love Canal. Exxon Valdez. Times Beach. Sacramento River Spill. Amoco Cadiz. Seveso. Every area of the world has been affected by improper waste disposal and chemical spills. Common hazardous waste sites include abandoned warehouses, manufacturing facilities, processing plants, and landfills. These sites poison the land and contaminate groundwater and drinking water. A sequel to the bestselling Ecological Risk Assessment, Ecological Risk Assessment for Contaminated Sites focuses on how to perform ecological risk assessments for Superfund sites and locations contaminated by improper disposal of wastes, or chemical spills. It integrates the authors' extensive experience in assessing ecological risks at U.S. government sites with techniques and examples from assessments performed by others. Conducting an ecological risk assessment on a contaminated site provides the information needed to make decisions concerning site remediation. The first rule of good risk assessment is "don't do anything stupid". With the practical preparation you get from Ecological Risk Assessment for Contaminated Sites you won't.




Ecological Assessment of Hazardous Waste Sites


Book Description

Ecological Assessment of Hazardous Waste Sites James T. Maughan, Ph.D. This book provides the essential technical and regulatory information necessary to plan, prepare, and implement an ecological assessment of a hazardous waste site in compliance with current government regulations. James T. Maughan, with input from several contributing authors, presents a precise, step-by-step approach to analysis of ecological resources present on-site, their risk from contamination, and the potential for remediation and restoration. All aspects of the book are related back to a clearly-stated definition of objectives and needs for ecological assessment of hazardous waste sites. Focusing on both traditional and experimental methods for the evaluation of a hazardous waste site, the book examines the overall approach to assessments as well as techniques for evaluating three prominent aspects of ecological assessments: terrestrial pathways of contaminants, sediment quality and contamination, and toxicity testing. Dr. Maughan catalogs and clarifies the appropriate regulations and agency expectations that must be met in order to avoid noncompliance. In addition, the author includes detailed case studies which elaborate the concepts and techniques of ecological assessment. Ecological Assessment of Hazardous Waste Sites is ideal as both a reference and a training text for ecologists, other biologists, and natural resource planners lacking extensive experience in hazardous waste investigations. Engineers, geologists, chemists, and managers with hazardous waste experience but little or no experience in ecology will find this an invaluable source: This book is of use to a wide cross-section of professionals, educators, and students in the environmental consulting industry and the environmental regulatory community.







Environmental Epidemiology, Volume 1


Book Description

The amount of hazardous waste in the United States has been estimated at 275 million metric tons in licensed sites alone. Is the health of Americans at risk from exposure to this toxic material? This volume, the first of several on environmental epidemiology, reviews the available evidence and makes recommendations for filling gaps in data and improving health assessments. The book explores: Whether researchers can infer health hazards from available data. The results of substantial state and federal programs on hazardous waste dangers. The book presents the results of studies of hazardous wastes in the air, water, soil, and food and examines the potential of biological markers in health risk assessment. The data and recommendations in this volume will be of immediate use to toxicologists, environmental health professionals, epidemiologists, and other biologists.




Site Assessment and Remediation for Environmental Engineers


Book Description

This book serves as a primary textbook for environmental site investigation and remediation of subsurface soil and groundwater. It introduces concepts and principles of field investigative techniques to adequately determine the extent of contamination in the subsurface for the selection of cleanup alternatives. It then focuses on practical calculations and skills needed to design and operate remediation systems that will both educate students and be useful for entry-level professionals in the field. Features: • Examines the practical aspects of investigating and cleaning up contaminated soil and groundwater • Contains scenarios, illustrations, equations, and example problems with discussions that illustrate various practical situations and interpret the results • Includes end-of-chapter problems to reinforce student learning • Provides a regulatory and risk analysis context, as well as public and community involvement aspects • Discusses sustainability and performance assessment of the remediation methods presented Site Assessment and Remediation for Environmental Engineers provides upper-level undergraduate and graduate students with practical, project-oriented knowledge of how to investigate and clean up a site contaminated with chemicals and hazardous waste.




Hazardous Waste Site Remediation


Book Description

Hazardous Waste Site Remediation is an outstanding textbook that reviews specific treatment processes, as well as pertinent basic concepts in organic geochemistry, material balance mass transfer, thermodynamics, and kinetics. Following a quantitative approach to source control, the text covers regulations, materials handling, engineering principles, soil vapor extraction, chemical extraction and soil washing, solidification and stabilization, and chemical destruction. It also explores topics in bioremediation, thermal processes, risk assessment, and waste minimization. A solutions manual is available.




Hazardous Waste Incineration


Book Description

Incineration: no other form of hazardous waste disposal has matched its efficiency at volume reduction, and the permanent destruction of organic wastes. That convenience may come at a price, as questions and concerns continue to surround the potential human health impacts and ecosystem effects allegedly caused by incineration. Hazardous Waste Incineration: Evaluating the Human Health and Environmental Risks addresses those concerns by summarizing recent research. Commissioned in part by the Florida Department of Environmental Protection, this volume compiles reports and observations from specialists throughout the United States. Fourteen chapters respond to the key questions posed by the researchers: What is known about existing hazardous waste incinerators, and their impacts on human health? Can the impacts of a proposed facility be evaluated before it is built, and if so, how? What is the regulatory compliance record of existing commercial hazardous waste incinerators? What methods can be used to monitor a facility's impacts after it is built? Their response: the most complete treatment of the subject-a timely and controversial topic.




Risk-Based Waste Classification in California


Book Description

The Department of Toxic Substances Control (DTSC) of the State of California Environmental Protection Agency is in the process of complying with the Regulatory Structure Update. The Regulatory Structure Update is a comprehensive review and refocusing of California's system for identifying and regulating management of hazardous wastes. As part of this effort, the DTSC proposes to change its current waste classification system that categorizes wastes as hazardous or nonhazardous based on their toxicity. Under the proposed system there would be two risk-based thresholds rather than the single toxicity threshold currently used to distinguish between the wastes. Wastes that contain specific chemicals at concentrations that exceed the upper threshold will be designated as hazardous; those below the lower threshold will be nonhazardous; and those with chemical concentrations between the two thresholds will be "special" wastes and subject to variances for management and disposal. The proposed DTSC system combines toxicity information with short or long-term exposure information to determine the risks associated with the chemicals. Under section 57004 of the California Health and Safety Code, the scientific basis of the proposed waste classification system is subject to external scientific peer review by the National Academy of Sciences, the University of California, or other similar institution of higher learning or group of scientists. This report addresses that regulatory requirement.




Solid Waste: Assessment, Monitoring and Remediation


Book Description

This book covers a broad group of wastes, from biowaste to hazardous waste, but primarily the largest (by mass and volume) group of wastes that are not hazardous, but also are not inert, and are problematic for three major reasons: (1) they are difficult to manage because of their volume: usually they are used in civil engineering as a common fill etc., where they are exposed to environmental conditions almost the same way as at disposal sites; (2) they are not geochemically stable and in the different periods of environmental exposure undergo transformations that might add hazardous properties to the material that are not displayed when it is freshly generated; (3) many designers and researchers in different countries involved in waste management are often not aware of time-delayed adverse environmental impact of some large-volume waste, and also do not consider some positive properties that may extend the area of their environmentally beneficial application.